4 files changed, 81 insertions, 2 deletions
diff --git a/arch/nios2/cpu/Makefile b/arch/nios2/cpu/Makefile
index aa41160..402fd74 100644
--- a/arch/nios2/cpu/Makefile
+++ b/arch/nios2/cpu/Makefile
@@ -28,6 +28,7 @@ LIB	= $(obj)lib$(CPU).o
 START	= start.o
 SOBJS	= exceptions.o
 COBJS	= cpu.o interrupts.o sysid.o traps.o epcs.o
+COBJS	+= fdt.o
 
 SRCS	:= $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS))
diff --git a/arch/nios2/cpu/cpu.c b/arch/nios2/cpu/cpu.c
index ef360ee..edf2560 100644
--- a/arch/nios2/cpu/cpu.c
+++ b/arch/nios2/cpu/cpu.c
@@ -24,6 +24,7 @@
 #include <common.h>
 #include <nios2.h>
 #include <nios2-io.h>
+#include <asm/cache.h>
 
 #if defined (CONFIG_SYS_NIOS_SYSID_BASE)
 extern void display_sysid (void);
@@ -47,3 +48,18 @@ int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 	nios2_callr(CONFIG_SYS_RESET_ADDR);
 	return 0;
 }
+
+int dcache_status(void)
+{
+	return 1;
+}
+
+void dcache_enable(void)
+{
+	flush_dcache(CONFIG_SYS_DCACHE_SIZE, CONFIG_SYS_DCACHELINE_SIZE);
+}
+
+void dcache_disable(void)
+{
+	flush_dcache(CONFIG_SYS_DCACHE_SIZE, CONFIG_SYS_DCACHELINE_SIZE);
+}
diff --git a/arch/nios2/cpu/fdt.c b/arch/nios2/cpu/fdt.c
new file mode 100644
index 0000000..b1ed9e1
--- /dev/null
+++ b/arch/nios2/cpu/fdt.c
@@ -0,0 +1,53 @@
+/*
+ * (C) Copyright 2011, Missing Link Electronics
+ *                     Joachim Foerster <joachim@missinglinkelectronics.com>
+ *
+ * Taken from arch/powerpc/cpu/ppc4xx/fdt.c:
+ *
+ * (C) Copyright 2007-2008
+ * Stefan Roese, DENX Software Engineering, sr@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+
+#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
+#include <libfdt.h>
+#include <libfdt_env.h>
+#include <fdt_support.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+void __ft_board_setup(void *blob, bd_t *bd)
+{
+	ft_cpu_setup(blob, bd);
+}
+void ft_board_setup(void *blob, bd_t *bd) \
+	__attribute__((weak, alias("__ft_board_setup")));
+
+void ft_cpu_setup(void *blob, bd_t *bd)
+{
+	/*
+	 * Fixup all ethernet nodes
+	 * Note: aliases in the dts are required for this
+	 */
+	fdt_fixup_ethernet(blob);
+}
+#endif /* CONFIG_OF_LIBFDT && CONFIG_OF_BOARD_SETUP */
diff --git a/arch/nios2/include/asm/gpio.h b/arch/nios2/include/asm/gpio.h
index 4b21c8f..908381f 100644
--- a/arch/nios2/include/asm/gpio.h
+++ b/arch/nios2/include/asm/gpio.h
@@ -5,8 +5,8 @@
  * bit[0] data
  * bit[1] output enable
  *
- * when CONFIG_SYS_GPIO_BASE is not defined, board may provide
- * its own driver.
+ * When CONFIG_SYS_GPIO_BASE is not defined, the board may either
+ * provide its own driver or the altera_pio driver may be used.
  *
  * Copyright (C) 2010 Thomas Chou <thomas@wytron.com.tw>
  *
@@ -58,6 +58,15 @@ static inline int gpio_is_valid(int number)
 	return ((unsigned)number) < CONFIG_SYS_GPIO_WIDTH;
 }
 #else
+#ifdef CONFIG_ALTERA_PIO
+extern int altera_pio_init(u32 base, u8 width, char iot,
+			   u32 rstval, u32 negmask,
+			   const char *label);
+
+extern void altera_pio_info(void);
+#define gpio_status() altera_pio_info()
+#endif
+
 extern int gpio_request(unsigned gpio, const char *label);
 extern int gpio_free(unsigned gpio);
 extern int gpio_direction_input(unsigned gpio);